Like Paul Irish commented, I too have been playing around with font-size-adjust as a way of reducing the impact of FOUT. It only works in Firefox in the moment, but it’s a very effective way of getting x-heights to match perfectly. Obviously there are other metrics and characteristics involved in type matching, but x-height is probably the one with the biggest impact.
Richard Rutter
Like Paul Irish commented, I too have been playing around with font-size-adjust as a way of reducing the impact of FOUT. It only works in Firefox in the moment, but it’s a very effective way of getting x-heights to match perfectly. Obviously there are other metrics and characteristics involved in type matching, but x-height is probably the one with the biggest impact.